[qemu.git] / hw / parallel.c

/*
 * QEMU Parallel PORT emulation
 *
 * Copyright (c) 2003-2005 Fabrice Bellard
 * Copyright (c) 2007 Marko Kohtala
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "hw.h"
#include "qemu-char.h"
#include "isa.h"
#include "pc.h"
#include "sysemu.h"

//#define DEBUG_PARALLEL

#ifdef DEBUG_PARALLEL
#define pdebug(fmt, ...) printf("pp: " fmt, ## __VA_ARGS__)
#else
#define pdebug(fmt, ...) ((void)0)
#endif

#define PARA_REG_DATA 0
#define PARA_REG_STS 1
#define PARA_REG_CTR 2
#define PARA_REG_EPP_ADDR 3
#define PARA_REG_EPP_DATA 4

/*
 * These are the definitions for the Printer Status Register
 */
#define PARA_STS_BUSY	0x80	/* Busy complement */
#define PARA_STS_ACK	0x40	/* Acknowledge */
#define PARA_STS_PAPER	0x20	/* Out of paper */
#define PARA_STS_ONLINE	0x10	/* Online */
#define PARA_STS_ERROR	0x08	/* Error complement */
#define PARA_STS_TMOUT	0x01	/* EPP timeout */

/*
 * These are the definitions for the Printer Control Register
 */
#define PARA_CTR_DIR	0x20	/* Direction (1=read, 0=write) */
#define PARA_CTR_INTEN	0x10	/* IRQ Enable */
#define PARA_CTR_SELECT	0x08	/* Select In complement */
#define PARA_CTR_INIT	0x04	/* Initialize Printer complement */
#define PARA_CTR_AUTOLF	0x02	/* Auto linefeed complement */
#define PARA_CTR_STROBE	0x01	/* Strobe complement */

#define PARA_CTR_SIGNAL (PARA_CTR_SELECT|PARA_CTR_INIT|PARA_CTR_AUTOLF|PARA_CTR_STROBE)

struct ParallelState {
    uint8_t dataw;
    uint8_t datar;
    uint8_t status;
    uint8_t control;
    qemu_irq irq;
    int irq_pending;
    CharDriverState *chr;
    int hw_driver;
    int epp_timeout;
    uint32_t last_read_offset; /* For debugging */
    /* Memory-mapped interface */
    int it_shift;
};

typedef struct ISAParallelState {
    ISADevice dev;
    uint32_t index;
    uint32_t iobase;
    uint32_t isairq;
    ParallelState state;
} ISAParallelState;

static void parallel_update_irq(ParallelState *s)
{
    if (s->irq_pending)
        qemu_irq_raise(s->irq);
    else
        qemu_irq_lower(s->irq);
}

static void
parallel_ioport_write_sw(void *opaque, uint32_t addr, uint32_t val)
{
    ParallelState *s = opaque;

    pdebug("write addr=0x%02x val=0x%02x\n", addr, val);

    addr &= 7;
    switch(addr) {
    case PARA_REG_DATA:
        s->dataw = val;
        parallel_update_irq(s);
        break;
    case PARA_REG_CTR:
        val |= 0xc0;
        if ((val & PARA_CTR_INIT) == 0 ) {
            s->status = PARA_STS_BUSY;
            s->status |= PARA_STS_ACK;
            s->status |= PARA_STS_ONLINE;
            s->status |= PARA_STS_ERROR;
        }
        else if (val & PARA_CTR_SELECT) {
            if (val & PARA_CTR_STROBE) {
                s->status &= ~PARA_STS_BUSY;
                if ((s->control & PARA_CTR_STROBE) == 0)
                    qemu_chr_write(s->chr, &s->dataw, 1);
            } else {
                if (s->control & PARA_CTR_INTEN) {
                    s->irq_pending = 1;
                }
            }
        }
        parallel_update_irq(s);
        s->control = val;
        break;
    }
}

static void parallel_ioport_write_hw(void *opaque, uint32_t addr, uint32_t val)
{
    ParallelState *s = opaque;
    uint8_t parm = val;
    int dir;

    /* Sometimes programs do several writes for timing purposes on old
       HW. Take care not to waste time on writes that do nothing. */

    s->last_read_offset = ~0U;

    addr &= 7;
    switch(addr) {
    case PARA_REG_DATA:
        if (s->dataw == val)
            return;
        pdebug("wd%02x\n", val);
        qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_WRITE_DATA, &parm);
        s->dataw = val;
        break;
    case PARA_REG_STS:
        pdebug("ws%02x\n", val);
        if (val & PARA_STS_TMOUT)
            s->epp_timeout = 0;
        break;
    case PARA_REG_CTR:
        val |= 0xc0;
        if (s->control == val)
            return;
        pdebug("wc%02x\n", val);

        if ((val & PARA_CTR_DIR) != (s->control & PARA_CTR_DIR)) {
            if (val & PARA_CTR_DIR) {
                dir = 1;
            } else {
                dir = 0;
            }
            qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_DATA_DIR, &dir);
            parm &= ~PARA_CTR_DIR;
        }

        qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_WRITE_CONTROL, &parm);
        s->control = val;
        break;
    case PARA_REG_EPP_ADDR:
        if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT)
            /* Controls not correct for EPP address cycle, so do nothing */
            pdebug("wa%02x s\n", val);
        else {
            struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 };
            if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE_ADDR, &ioarg)) {
                s->epp_timeout = 1;
                pdebug("wa%02x t\n", val);
            }
            else
                pdebug("wa%02x\n", val);
        }
        break;
    case PARA_REG_EPP_DATA:
        if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT)
            /* Controls not correct for EPP data cycle, so do nothing */
            pdebug("we%02x s\n", val);
        else {
            struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 };
            if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg)) {
                s->epp_timeout = 1;
                pdebug("we%02x t\n", val);
            }
            else
                pdebug("we%02x\n", val);
        }
        break;
    }
}

static void
parallel_ioport_eppdata_write_hw2(void *opaque, uint32_t addr, uint32_t val)
{
    ParallelState *s = opaque;
    uint16_t eppdata = cpu_to_le16(val);
    int err;
    struct ParallelIOArg ioarg = {
        .buffer = &eppdata, .count = sizeof(eppdata)
    };
    if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) {
        /* Controls not correct for EPP data cycle, so do nothing */
        pdebug("we%04x s\n", val);
        return;
    }
    err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg);
    if (err) {
        s->epp_timeout = 1;
        pdebug("we%04x t\n", val);
    }
    else
        pdebug("we%04x\n", val);
}

static void
parallel_ioport_eppdata_write_hw4(void *opaque, uint32_t addr, uint32_t val)
{
    ParallelState *s = opaque;
    uint32_t eppdata = cpu_to_le32(val);
    int err;
    struct ParallelIOArg ioarg = {
        .buffer = &eppdata, .count = sizeof(eppdata)
    };
    if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) {
        /* Controls not correct for EPP data cycle, so do nothing */
        pdebug("we%08x s\n", val);
        return;
    }
    err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg);
    if (err) {
        s->epp_timeout = 1;
        pdebug("we%08x t\n", val);
    }
    else
        pdebug("we%08x\n", val);
}

static uint32_t parallel_ioport_read_sw(void *opaque, uint32_t addr)
{
    ParallelState *s = opaque;
    uint32_t ret = 0xff;

    addr &= 7;
    switch(addr) {
    case PARA_REG_DATA:
        if (s->control & PARA_CTR_DIR)
            ret = s->datar;
        else
            ret = s->dataw;
        break;
    case PARA_REG_STS:
        ret = s->status;
        s->irq_pending = 0;
        if ((s->status & PARA_STS_BUSY) == 0 && (s->control & PARA_CTR_STROBE) == 0) {
            /* XXX Fixme: wait 5 microseconds */
            if (s->status & PARA_STS_ACK)
                s->status &= ~PARA_STS_ACK;
            else {
                /* XXX Fixme: wait 5 microseconds */
                s->status |= PARA_STS_ACK;
                s->status |= PARA_STS_BUSY;
            }
        }
        parallel_update_irq(s);
        break;
    case PARA_REG_CTR:
        ret = s->control;
        break;
    }
    pdebug("read addr=0x%02x val=0x%02x\n", addr, ret);
    return ret;
}

static uint32_t parallel_ioport_read_hw(void *opaque, uint32_t addr)
{
    ParallelState *s = opaque;
    uint8_t ret = 0xff;
    addr &= 7;
    switch(addr) {
    case PARA_REG_DATA:
        qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_DATA, &ret);
        if (s->last_read_offset != addr || s->datar != ret)
            pdebug("rd%02x\n", ret);
        s->datar = ret;
        break;
    case PARA_REG_STS:
        qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &ret);
        ret &= ~PARA_STS_TMOUT;
        if (s->epp_timeout)
            ret |= PARA_STS_TMOUT;
        if (s->last_read_offset != addr || s->status != ret)
            pdebug("rs%02x\n", ret);
        s->status = ret;
        break;
    case PARA_REG_CTR:
        /* s->control has some bits fixed to 1. It is zero only when
           it has not been yet written to.  */
        if (s->control == 0) {
            qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_CONTROL, &ret);
            if (s->last_read_offset != addr)
                pdebug("rc%02x\n", ret);
            s->control = ret;
        }
        else {
            ret = s->control;
            if (s->last_read_offset != addr)
                pdebug("rc%02x\n", ret);
        }
        break;
    case PARA_REG_EPP_ADDR:
        if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT))
            /* Controls not correct for EPP addr cycle, so do nothing */
            pdebug("ra%02x s\n", ret);
        else {
            struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 };
            if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ_ADDR, &ioarg)) {
                s->epp_timeout = 1;
                pdebug("ra%02x t\n", ret);
            }
            else
                pdebug("ra%02x\n", ret);
        }
        break;
    case PARA_REG_EPP_DATA:
        if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT))
            /* Controls not correct for EPP data cycle, so do nothing */
            pdebug("re%02x s\n", ret);
        else {
            struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 };
            if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg)) {
                s->epp_timeout = 1;
                pdebug("re%02x t\n", ret);
            }
            else
                pdebug("re%02x\n", ret);
        }
        break;
    }
    s->last_read_offset = addr;
    return ret;
}

static uint32_t
parallel_ioport_eppdata_read_hw2(void *opaque, uint32_t addr)
{
    ParallelState *s = opaque;
    uint32_t ret;
    uint16_t eppdata = ~0;
    int err;
    struct ParallelIOArg ioarg = {
        .buffer = &eppdata, .count = sizeof(eppdata)
    };
    if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT)) {
        /* Controls not correct for EPP data cycle, so do nothing */
        pdebug("re%04x s\n", eppdata);
        return eppdata;
    }
    err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg);
    ret = le16_to_cpu(eppdata);

    if (err) {
        s->epp_timeout = 1;
        pdebug("re%04x t\n", ret);
    }
    else
        pdebug("re%04x\n", ret);
    return ret;
}

static uint32_t
parallel_ioport_eppdata_read_hw4(void *opaque, uint32_t addr)
{
    ParallelState *s = opaque;
    uint32_t ret;
    uint32_t eppdata = ~0U;
    int err;
    struct ParallelIOArg ioarg = {
        .buffer = &eppdata, .count = sizeof(eppdata)
    };
    if ((s->control & (PARA_CTR_DIR|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR|PARA_CTR_INIT)) {
        /* Controls not correct for EPP data cycle, so do nothing */
        pdebug("re%08x s\n", eppdata);
        return eppdata;
    }
    err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg);
    ret = le32_to_cpu(eppdata);

    if (err) {
        s->epp_timeout = 1;
        pdebug("re%08x t\n", ret);
    }
    else
        pdebug("re%08x\n", ret);
    return ret;
}

static void parallel_ioport_ecp_write(void *opaque, uint32_t addr, uint32_t val)
{
    pdebug("wecp%d=%02x\n", addr & 7, val);
}

static uint32_t parallel_ioport_ecp_read(void *opaque, uint32_t addr)
{
    uint8_t ret = 0xff;

    pdebug("recp%d:%02x\n", addr & 7, ret);
    return ret;
}

static void parallel_reset(void *opaque)
{
    ParallelState *s = opaque;

    s->datar = ~0;
    s->dataw = ~0;
    s->status = PARA_STS_BUSY;
    s->status |= PARA_STS_ACK;
    s->status |= PARA_STS_ONLINE;
    s->status |= PARA_STS_ERROR;
    s->status |= PARA_STS_TMOUT;
    s->control = PARA_CTR_SELECT;
    s->control |= PARA_CTR_INIT;
    s->control |= 0xc0;
    s->irq_pending = 0;
    s->hw_driver = 0;
    s->epp_timeout = 0;
    s->last_read_offset = ~0U;
}

static const int isa_parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };

static int parallel_isa_initfn(ISADevice *dev)
{
    static int index;
    ISAParallelState *isa = DO_UPCAST(ISAParallelState, dev, dev);
    ParallelState *s = &isa->state;
    int base;
    uint8_t dummy;

    if (!s->chr) {
        fprintf(stderr, "Can't create parallel device, empty char device\n");
        exit(1);
    }

    if (isa->index == -1)
        isa->index = index;
    if (isa->index >= MAX_PARALLEL_PORTS)
        return -1;
    if (isa->iobase == -1)
        isa->iobase = isa_parallel_io[isa->index];
    index++;

    base = isa->iobase;
    isa_init_irq(dev, &s->irq, isa->isairq);
    qemu_register_reset(parallel_reset, s);

    if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
        s->hw_driver = 1;
        s->status = dummy;
    }

    if (s->hw_driver) {
        register_ioport_write(base, 8, 1, parallel_ioport_write_hw, s);
        register_ioport_read(base, 8, 1, parallel_ioport_read_hw, s);
        register_ioport_write(base+4, 1, 2, parallel_ioport_eppdata_write_hw2, s);
        register_ioport_read(base+4, 1, 2, parallel_ioport_eppdata_read_hw2, s);
        register_ioport_write(base+4, 1, 4, parallel_ioport_eppdata_write_hw4, s);
        register_ioport_read(base+4, 1, 4, parallel_ioport_eppdata_read_hw4, s);
        register_ioport_write(base+0x400, 8, 1, parallel_ioport_ecp_write, s);
        register_ioport_read(base+0x400, 8, 1, parallel_ioport_ecp_read, s);
    }
    else {
        register_ioport_write(base, 8, 1, parallel_ioport_write_sw, s);
        register_ioport_read(base, 8, 1, parallel_ioport_read_sw, s);
    }
    return 0;
}

ParallelState *parallel_init(int index, CharDriverState *chr)
{
    ISADevice *dev;

    dev = isa_create("isa-parallel");
    qdev_prop_set_uint32(&dev->qdev, "index", index);
    qdev_prop_set_chr(&dev->qdev, "chardev", chr);
    if (qdev_init(&dev->qdev) < 0)
        return NULL;
    return &DO_UPCAST(ISAParallelState, dev, dev)->state;
}

/* Memory mapped interface */
static uint32_t parallel_mm_readb (void *opaque, target_phys_addr_t addr)
{
    ParallelState *s = opaque;

    return parallel_ioport_read_sw(s, addr >> s->it_shift) & 0xFF;
}

static void parallel_mm_writeb (void *opaque,
                                target_phys_addr_t addr, uint32_t value)
{
    ParallelState *s = opaque;

    parallel_ioport_write_sw(s, addr >> s->it_shift, value & 0xFF);
}

static uint32_t parallel_mm_readw (void *opaque, target_phys_addr_t addr)
{
    ParallelState *s = opaque;

    return parallel_ioport_read_sw(s, addr >> s->it_shift) & 0xFFFF;
}

static void parallel_mm_writew (void *opaque,
                                target_phys_addr_t addr, uint32_t value)
{
    ParallelState *s = opaque;

    parallel_ioport_write_sw(s, addr >> s->it_shift, value & 0xFFFF);
}

static uint32_t parallel_mm_readl (void *opaque, target_phys_addr_t addr)
{
    ParallelState *s = opaque;

    return parallel_ioport_read_sw(s, addr >> s->it_shift);
}

static void parallel_mm_writel (void *opaque,
                                target_phys_addr_t addr, uint32_t value)
{
    ParallelState *s = opaque;

    parallel_ioport_write_sw(s, addr >> s->it_shift, value);
}

static CPUReadMemoryFunc * const parallel_mm_read_sw[] = {
    &parallel_mm_readb,
    &parallel_mm_readw,
    &parallel_mm_readl,
};

static CPUWriteMemoryFunc * const parallel_mm_write_sw[] = {
    &parallel_mm_writeb,
    &parallel_mm_writew,
    &parallel_mm_writel,
};

/* If fd is zero, it means that the parallel device uses the console */
ParallelState *parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq, CharDriverState *chr)
{
    ParallelState *s;
    int io_sw;

    s = qemu_mallocz(sizeof(ParallelState));
    s->irq = irq;
    s->chr = chr;
    s->it_shift = it_shift;
    qemu_register_reset(parallel_reset, s);

    io_sw = cpu_register_io_memory(parallel_mm_read_sw, parallel_mm_write_sw, s);
    cpu_register_physical_memory(base, 8 << it_shift, io_sw);
    return s;
}

static ISADeviceInfo parallel_isa_info = {
    .qdev.name  = "isa-parallel",
    .qdev.size  = sizeof(ISAParallelState),
    .init       = parallel_isa_initfn,
    .qdev.props = (Property[]) {
        DEFINE_PROP_UINT32("index", ISAParallelState, index,   -1),
        DEFINE_PROP_HEX32("iobase", ISAParallelState, iobase,  -1),
        DEFINE_PROP_UINT32("irq",   ISAParallelState, isairq,  7),
        DEFINE_PROP_CHR("chardev",  ISAParallelState, state.chr),
        DEFINE_PROP_END_OF_LIST(),
    },
};

static void parallel_register_devices(void)
{
    isa_qdev_register(&parallel_isa_info);
}

device_init(parallel_register_devices)
Commit	Line	Data
6508fe59 FB	1	/*
6508fe59 FB	2	* QEMU Parallel PORT emulation
5fafdf24	3	*
e57a8c0e	4	* Copyright (c) 2003-2005 Fabrice Bellard
5867c88a	5	* Copyright (c) 2007 Marko Kohtala
5fafdf24	6	*
6508fe59 FB	7	* Permission is hereby granted, free of charge, to any person obtaining a copy
	8	* of this software and associated documentation files (the "Software"), to deal
	9	* in the Software without restriction, including without limitation the rights
	10	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	11	* copies of the Software, and to permit persons to whom the Software is
	12	* furnished to do so, subject to the following conditions:
	13	*
	14	* The above copyright notice and this permission notice shall be included in
	15	* all copies or substantial portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	20	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	21	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	22	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	23	* THE SOFTWARE.
	24	*/
87ecb68b PB	25	#include "hw.h"
	26	#include "qemu-char.h"
	27	#include "isa.h"
	28	#include "pc.h"
666daa68	29	#include "sysemu.h"
6508fe59 FB	30
	31	//#define DEBUG_PARALLEL
	32
5867c88a	33	#ifdef DEBUG_PARALLEL
001faf32	34	#define pdebug(fmt, ...) printf("pp: " fmt, ## __VA_ARGS__)
5867c88a	35	#else
001faf32	36	#define pdebug(fmt, ...) ((void)0)
5867c88a TS	37	#endif
	38
	39	#define PARA_REG_DATA 0
	40	#define PARA_REG_STS 1
	41	#define PARA_REG_CTR 2
	42	#define PARA_REG_EPP_ADDR 3
	43	#define PARA_REG_EPP_DATA 4
	44
6508fe59 FB	45	/*
	46	* These are the definitions for the Printer Status Register
	47	*/
	48	#define PARA_STS_BUSY 0x80 /* Busy complement */
	49	#define PARA_STS_ACK 0x40 /* Acknowledge */
	50	#define PARA_STS_PAPER 0x20 /* Out of paper */
	51	#define PARA_STS_ONLINE 0x10 /* Online */
	52	#define PARA_STS_ERROR 0x08 /* Error complement */
5867c88a	53	#define PARA_STS_TMOUT 0x01 /* EPP timeout */
6508fe59 FB	54
	55	/*
	56	* These are the definitions for the Printer Control Register
	57	*/
5867c88a	58	#define PARA_CTR_DIR 0x20 /* Direction (1=read, 0=write) */
6508fe59 FB	59	#define PARA_CTR_INTEN 0x10 /* IRQ Enable */
	60	#define PARA_CTR_SELECT 0x08 /* Select In complement */
	61	#define PARA_CTR_INIT 0x04 /* Initialize Printer complement */
	62	#define PARA_CTR_AUTOLF 0x02 /* Auto linefeed complement */
	63	#define PARA_CTR_STROBE 0x01 /* Strobe complement */
	64
5867c88a TS	65	#define PARA_CTR_SIGNAL (PARA_CTR_SELECT\|PARA_CTR_INIT\|PARA_CTR_AUTOLF\|PARA_CTR_STROBE)
5867c88a TS	66
6508fe59	67	struct ParallelState {
5867c88a TS	68	uint8_t dataw;
	69	uint8_t datar;
	70	uint8_t status;
6508fe59	71	uint8_t control;
d537cf6c	72	qemu_irq irq;
6508fe59 FB	73	int irq_pending;
6508fe59 FB	74	CharDriverState *chr;
e57a8c0e	75	int hw_driver;
5867c88a TS	76	int epp_timeout;
5867c88a TS	77	uint32_t last_read_offset; /* For debugging */
d60532ca	78	/* Memory-mapped interface */
d60532ca	79	int it_shift;
6508fe59 FB	80	};
6508fe59 FB	81
021f0674 GH	82	typedef struct ISAParallelState {
021f0674 GH	83	ISADevice dev;
e8ee28fb	84	uint32_t index;
021f0674 GH	85	uint32_t iobase;
	86	uint32_t isairq;
	87	ParallelState state;
	88	} ISAParallelState;
	89
6508fe59 FB	90	static void parallel_update_irq(ParallelState *s)
	91	{
	92	if (s->irq_pending)
d537cf6c	93	qemu_irq_raise(s->irq);
6508fe59	94	else
d537cf6c	95	qemu_irq_lower(s->irq);
6508fe59 FB	96	}
6508fe59 FB	97
5867c88a TS	98	static void
5867c88a TS	99	parallel_ioport_write_sw(void *opaque, uint32_t addr, uint32_t val)
6508fe59 FB	100	{
6508fe59 FB	101	ParallelState *s = opaque;
3b46e624	102
5867c88a TS	103	pdebug("write addr=0x%02x val=0x%02x\n", addr, val);
	104
	105	addr &= 7;
	106	switch(addr) {
	107	case PARA_REG_DATA:
0fa7f157 TS	108	s->dataw = val;
0fa7f157 TS	109	parallel_update_irq(s);
5867c88a TS	110	break;
5867c88a TS	111	case PARA_REG_CTR:
52ccc5e0	112	val \|= 0xc0;
0fa7f157 TS	113	if ((val & PARA_CTR_INIT) == 0 ) {
	114	s->status = PARA_STS_BUSY;
	115	s->status \|= PARA_STS_ACK;
	116	s->status \|= PARA_STS_ONLINE;
	117	s->status \|= PARA_STS_ERROR;
	118	}
	119	else if (val & PARA_CTR_SELECT) {
	120	if (val & PARA_CTR_STROBE) {
	121	s->status &= ~PARA_STS_BUSY;
	122	if ((s->control & PARA_CTR_STROBE) == 0)
	123	qemu_chr_write(s->chr, &s->dataw, 1);
	124	} else {
	125	if (s->control & PARA_CTR_INTEN) {
	126	s->irq_pending = 1;
	127	}
	128	}
	129	}
	130	parallel_update_irq(s);
	131	s->control = val;
5867c88a TS	132	break;
	133	}
	134	}
	135
	136	static void parallel_ioport_write_hw(void *opaque, uint32_t addr, uint32_t val)
	137	{
	138	ParallelState *s = opaque;
	139	uint8_t parm = val;
563e3c6e	140	int dir;
5867c88a TS	141
	142	/* Sometimes programs do several writes for timing purposes on old
	143	HW. Take care not to waste time on writes that do nothing. */
	144
	145	s->last_read_offset = ~0U;
	146
6508fe59	147	addr &= 7;
6508fe59	148	switch(addr) {
5867c88a TS	149	case PARA_REG_DATA:
5867c88a TS	150	if (s->dataw == val)
0fa7f157 TS	151	return;
	152	pdebug("wd%02x\n", val);
	153	qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_WRITE_DATA, &parm);
	154	s->dataw = val;
6508fe59	155	break;
5867c88a	156	case PARA_REG_STS:
0fa7f157 TS	157	pdebug("ws%02x\n", val);
	158	if (val & PARA_STS_TMOUT)
	159	s->epp_timeout = 0;
	160	break;
5867c88a TS	161	case PARA_REG_CTR:
	162	val \|= 0xc0;
	163	if (s->control == val)
0fa7f157 TS	164	return;
0fa7f157 TS	165	pdebug("wc%02x\n", val);
563e3c6e AJ	166
	167	if ((val & PARA_CTR_DIR) != (s->control & PARA_CTR_DIR)) {
	168	if (val & PARA_CTR_DIR) {
	169	dir = 1;
	170	} else {
	171	dir = 0;
	172	}
	173	qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_DATA_DIR, &dir);
	174	parm &= ~PARA_CTR_DIR;
	175	}
	176
0fa7f157 TS	177	qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_WRITE_CONTROL, &parm);
0fa7f157 TS	178	s->control = val;
6508fe59	179	break;
5867c88a	180	case PARA_REG_EPP_ADDR:
0fa7f157 TS	181	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != PARA_CTR_INIT)
	182	/* Controls not correct for EPP address cycle, so do nothing */
	183	pdebug("wa%02x s\n", val);
	184	else {
	185	struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 };
	186	if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE_ADDR, &ioarg)) {
	187	s->epp_timeout = 1;
	188	pdebug("wa%02x t\n", val);
	189	}
	190	else
	191	pdebug("wa%02x\n", val);
	192	}
	193	break;
5867c88a	194	case PARA_REG_EPP_DATA:
0fa7f157 TS	195	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != PARA_CTR_INIT)
	196	/* Controls not correct for EPP data cycle, so do nothing */
	197	pdebug("we%02x s\n", val);
	198	else {
	199	struct ParallelIOArg ioarg = { .buffer = &parm, .count = 1 };
	200	if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg)) {
	201	s->epp_timeout = 1;
	202	pdebug("we%02x t\n", val);
	203	}
	204	else
	205	pdebug("we%02x\n", val);
	206	}
	207	break;
5867c88a TS	208	}
	209	}
	210
	211	static void
	212	parallel_ioport_eppdata_write_hw2(void *opaque, uint32_t addr, uint32_t val)
	213	{
	214	ParallelState *s = opaque;
	215	uint16_t eppdata = cpu_to_le16(val);
	216	int err;
	217	struct ParallelIOArg ioarg = {
0fa7f157	218	.buffer = &eppdata, .count = sizeof(eppdata)
5867c88a TS	219	};
5867c88a TS	220	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) {
0fa7f157 TS	221	/* Controls not correct for EPP data cycle, so do nothing */
	222	pdebug("we%04x s\n", val);
	223	return;
5867c88a TS	224	}
	225	err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg);
	226	if (err) {
0fa7f157 TS	227	s->epp_timeout = 1;
0fa7f157 TS	228	pdebug("we%04x t\n", val);
5867c88a TS	229	}
5867c88a TS	230	else
0fa7f157	231	pdebug("we%04x\n", val);
5867c88a TS	232	}
	233
	234	static void
	235	parallel_ioport_eppdata_write_hw4(void *opaque, uint32_t addr, uint32_t val)
	236	{
	237	ParallelState *s = opaque;
	238	uint32_t eppdata = cpu_to_le32(val);
	239	int err;
	240	struct ParallelIOArg ioarg = {
0fa7f157	241	.buffer = &eppdata, .count = sizeof(eppdata)
5867c88a TS	242	};
5867c88a TS	243	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != PARA_CTR_INIT) {
0fa7f157 TS	244	/* Controls not correct for EPP data cycle, so do nothing */
	245	pdebug("we%08x s\n", val);
	246	return;
5867c88a TS	247	}
	248	err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_WRITE, &ioarg);
	249	if (err) {
0fa7f157 TS	250	s->epp_timeout = 1;
0fa7f157 TS	251	pdebug("we%08x t\n", val);
6508fe59	252	}
5867c88a	253	else
0fa7f157	254	pdebug("we%08x\n", val);
6508fe59 FB	255	}
6508fe59 FB	256
5867c88a	257	static uint32_t parallel_ioport_read_sw(void *opaque, uint32_t addr)
6508fe59 FB	258	{
	259	ParallelState *s = opaque;
	260	uint32_t ret = 0xff;
	261
	262	addr &= 7;
	263	switch(addr) {
5867c88a	264	case PARA_REG_DATA:
0fa7f157 TS	265	if (s->control & PARA_CTR_DIR)
	266	ret = s->datar;
	267	else
	268	ret = s->dataw;
6508fe59	269	break;
5867c88a	270	case PARA_REG_STS:
0fa7f157 TS	271	ret = s->status;
	272	s->irq_pending = 0;
	273	if ((s->status & PARA_STS_BUSY) == 0 && (s->control & PARA_CTR_STROBE) == 0) {
	274	/* XXX Fixme: wait 5 microseconds */
	275	if (s->status & PARA_STS_ACK)
	276	s->status &= ~PARA_STS_ACK;
	277	else {
	278	/* XXX Fixme: wait 5 microseconds */
	279	s->status \|= PARA_STS_ACK;
	280	s->status \|= PARA_STS_BUSY;
	281	}
	282	}
	283	parallel_update_irq(s);
6508fe59	284	break;
5867c88a	285	case PARA_REG_CTR:
6508fe59 FB	286	ret = s->control;
	287	break;
	288	}
5867c88a TS	289	pdebug("read addr=0x%02x val=0x%02x\n", addr, ret);
	290	return ret;
	291	}
	292
	293	static uint32_t parallel_ioport_read_hw(void *opaque, uint32_t addr)
	294	{
	295	ParallelState *s = opaque;
	296	uint8_t ret = 0xff;
	297	addr &= 7;
	298	switch(addr) {
	299	case PARA_REG_DATA:
0fa7f157 TS	300	qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_DATA, &ret);
	301	if (s->last_read_offset != addr \|\| s->datar != ret)
	302	pdebug("rd%02x\n", ret);
5867c88a TS	303	s->datar = ret;
	304	break;
	305	case PARA_REG_STS:
0fa7f157 TS	306	qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &ret);
	307	ret &= ~PARA_STS_TMOUT;
	308	if (s->epp_timeout)
	309	ret \|= PARA_STS_TMOUT;
	310	if (s->last_read_offset != addr \|\| s->status != ret)
	311	pdebug("rs%02x\n", ret);
	312	s->status = ret;
5867c88a TS	313	break;
	314	case PARA_REG_CTR:
	315	/* s->control has some bits fixed to 1. It is zero only when
0fa7f157 TS	316	it has not been yet written to. */
	317	if (s->control == 0) {
	318	qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_CONTROL, &ret);
	319	if (s->last_read_offset != addr)
	320	pdebug("rc%02x\n", ret);
	321	s->control = ret;
	322	}
	323	else {
	324	ret = s->control;
	325	if (s->last_read_offset != addr)
	326	pdebug("rc%02x\n", ret);
	327	}
5867c88a TS	328	break;
5867c88a TS	329	case PARA_REG_EPP_ADDR:
0fa7f157 TS	330	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR\|PARA_CTR_INIT))
	331	/* Controls not correct for EPP addr cycle, so do nothing */
	332	pdebug("ra%02x s\n", ret);
	333	else {
	334	struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 };
	335	if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ_ADDR, &ioarg)) {
	336	s->epp_timeout = 1;
	337	pdebug("ra%02x t\n", ret);
	338	}
	339	else
	340	pdebug("ra%02x\n", ret);
	341	}
	342	break;
5867c88a	343	case PARA_REG_EPP_DATA:
0fa7f157 TS	344	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR\|PARA_CTR_INIT))
	345	/* Controls not correct for EPP data cycle, so do nothing */
	346	pdebug("re%02x s\n", ret);
	347	else {
	348	struct ParallelIOArg ioarg = { .buffer = &ret, .count = 1 };
	349	if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg)) {
	350	s->epp_timeout = 1;
	351	pdebug("re%02x t\n", ret);
	352	}
	353	else
	354	pdebug("re%02x\n", ret);
	355	}
	356	break;
5867c88a TS	357	}
	358	s->last_read_offset = addr;
	359	return ret;
	360	}
	361
	362	static uint32_t
	363	parallel_ioport_eppdata_read_hw2(void *opaque, uint32_t addr)
	364	{
	365	ParallelState *s = opaque;
	366	uint32_t ret;
	367	uint16_t eppdata = ~0;
	368	int err;
	369	struct ParallelIOArg ioarg = {
0fa7f157	370	.buffer = &eppdata, .count = sizeof(eppdata)
5867c88a TS	371	};
5867c88a TS	372	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR\|PARA_CTR_INIT)) {
0fa7f157 TS	373	/* Controls not correct for EPP data cycle, so do nothing */
	374	pdebug("re%04x s\n", eppdata);
	375	return eppdata;
5867c88a TS	376	}
	377	err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg);
	378	ret = le16_to_cpu(eppdata);
	379
	380	if (err) {
0fa7f157 TS	381	s->epp_timeout = 1;
0fa7f157 TS	382	pdebug("re%04x t\n", ret);
5867c88a TS	383	}
5867c88a TS	384	else
0fa7f157	385	pdebug("re%04x\n", ret);
5867c88a TS	386	return ret;
	387	}
	388
	389	static uint32_t
	390	parallel_ioport_eppdata_read_hw4(void *opaque, uint32_t addr)
	391	{
	392	ParallelState *s = opaque;
	393	uint32_t ret;
	394	uint32_t eppdata = ~0U;
	395	int err;
	396	struct ParallelIOArg ioarg = {
0fa7f157	397	.buffer = &eppdata, .count = sizeof(eppdata)
5867c88a TS	398	};
5867c88a TS	399	if ((s->control & (PARA_CTR_DIR\|PARA_CTR_SIGNAL)) != (PARA_CTR_DIR\|PARA_CTR_INIT)) {
0fa7f157 TS	400	/* Controls not correct for EPP data cycle, so do nothing */
	401	pdebug("re%08x s\n", eppdata);
	402	return eppdata;
5867c88a TS	403	}
	404	err = qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_EPP_READ, &ioarg);
	405	ret = le32_to_cpu(eppdata);
	406
	407	if (err) {
0fa7f157 TS	408	s->epp_timeout = 1;
0fa7f157 TS	409	pdebug("re%08x t\n", ret);
5867c88a TS	410	}
5867c88a TS	411	else
0fa7f157	412	pdebug("re%08x\n", ret);
5867c88a TS	413	return ret;
	414	}
	415
	416	static void parallel_ioport_ecp_write(void *opaque, uint32_t addr, uint32_t val)
	417	{
7f5b7d3e	418	pdebug("wecp%d=%02x\n", addr & 7, val);
5867c88a TS	419	}
	420
	421	static uint32_t parallel_ioport_ecp_read(void *opaque, uint32_t addr)
	422	{
	423	uint8_t ret = 0xff;
7f5b7d3e BS	424
7f5b7d3e BS	425	pdebug("recp%d:%02x\n", addr & 7, ret);
6508fe59 FB	426	return ret;
	427	}
	428
33093a0a	429	static void parallel_reset(void *opaque)
6508fe59	430	{
33093a0a AJ	431	ParallelState *s = opaque;
33093a0a AJ	432
5867c88a TS	433	s->datar = ~0;
5867c88a TS	434	s->dataw = ~0;
6508fe59 FB	435	s->status = PARA_STS_BUSY;
	436	s->status \|= PARA_STS_ACK;
	437	s->status \|= PARA_STS_ONLINE;
	438	s->status \|= PARA_STS_ERROR;
52ccc5e0	439	s->status \|= PARA_STS_TMOUT;
6508fe59 FB	440	s->control = PARA_CTR_SELECT;
6508fe59 FB	441	s->control \|= PARA_CTR_INIT;
52ccc5e0	442	s->control \|= 0xc0;
5867c88a	443	s->irq_pending = 0;
5867c88a TS	444	s->hw_driver = 0;
	445	s->epp_timeout = 0;
	446	s->last_read_offset = ~0U;
d60532ca TS	447	}
d60532ca TS	448
e8ee28fb GH	449	static const int isa_parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
e8ee28fb GH	450
021f0674	451	static int parallel_isa_initfn(ISADevice *dev)
d60532ca	452	{
e8ee28fb	453	static int index;
021f0674 GH	454	ISAParallelState *isa = DO_UPCAST(ISAParallelState, dev, dev);
021f0674 GH	455	ParallelState *s = &isa->state;
e8ee28fb	456	int base;
d60532ca TS	457	uint8_t dummy;
d60532ca TS	458
021f0674 GH	459	if (!s->chr) {
	460	fprintf(stderr, "Can't create parallel device, empty char device\n");
	461	exit(1);
	462	}
	463
e8ee28fb GH	464	if (isa->index == -1)
	465	isa->index = index;
	466	if (isa->index >= MAX_PARALLEL_PORTS)
	467	return -1;
	468	if (isa->iobase == -1)
	469	isa->iobase = isa_parallel_io[isa->index];
	470	index++;
	471
	472	base = isa->iobase;
021f0674	473	isa_init_irq(dev, &s->irq, isa->isairq);
a08d4367	474	qemu_register_reset(parallel_reset, s);
6508fe59	475
021f0674	476	if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
5867c88a	477	s->hw_driver = 1;
0fa7f157	478	s->status = dummy;
5867c88a TS	479	}
	480
	481	if (s->hw_driver) {
0fa7f157 TS	482	register_ioport_write(base, 8, 1, parallel_ioport_write_hw, s);
	483	register_ioport_read(base, 8, 1, parallel_ioport_read_hw, s);
	484	register_ioport_write(base+4, 1, 2, parallel_ioport_eppdata_write_hw2, s);
	485	register_ioport_read(base+4, 1, 2, parallel_ioport_eppdata_read_hw2, s);
	486	register_ioport_write(base+4, 1, 4, parallel_ioport_eppdata_write_hw4, s);
	487	register_ioport_read(base+4, 1, 4, parallel_ioport_eppdata_read_hw4, s);
	488	register_ioport_write(base+0x400, 8, 1, parallel_ioport_ecp_write, s);
	489	register_ioport_read(base+0x400, 8, 1, parallel_ioport_ecp_read, s);
5867c88a TS	490	}
5867c88a TS	491	else {
0fa7f157 TS	492	register_ioport_write(base, 8, 1, parallel_ioport_write_sw, s);
0fa7f157 TS	493	register_ioport_read(base, 8, 1, parallel_ioport_read_sw, s);
5867c88a	494	}
021f0674 GH	495	return 0;
	496	}
	497
021f0674 GH	498	ParallelState parallel_init(int index, CharDriverState chr)
	499	{
	500	ISADevice *dev;
	501
	502	dev = isa_create("isa-parallel");
e8ee28fb	503	qdev_prop_set_uint32(&dev->qdev, "index", index);
021f0674	504	qdev_prop_set_chr(&dev->qdev, "chardev", chr);
5c17ca25	505	if (qdev_init(&dev->qdev) < 0)
021f0674 GH	506	return NULL;
021f0674 GH	507	return &DO_UPCAST(ISAParallelState, dev, dev)->state;
6508fe59	508	}
d60532ca TS	509
d60532ca TS	510	/* Memory mapped interface */
c227f099	511	static uint32_t parallel_mm_readb (void *opaque, target_phys_addr_t addr)
d60532ca TS	512	{
	513	ParallelState *s = opaque;
	514
8da3ff18	515	return parallel_ioport_read_sw(s, addr >> s->it_shift) & 0xFF;
d60532ca TS	516	}
d60532ca TS	517
9596ebb7	518	static void parallel_mm_writeb (void *opaque,
c227f099	519	target_phys_addr_t addr, uint32_t value)
d60532ca TS	520	{
	521	ParallelState *s = opaque;
	522
8da3ff18	523	parallel_ioport_write_sw(s, addr >> s->it_shift, value & 0xFF);
d60532ca TS	524	}
d60532ca TS	525
c227f099	526	static uint32_t parallel_mm_readw (void *opaque, target_phys_addr_t addr)
d60532ca TS	527	{
	528	ParallelState *s = opaque;
	529
8da3ff18	530	return parallel_ioport_read_sw(s, addr >> s->it_shift) & 0xFFFF;
d60532ca TS	531	}
d60532ca TS	532
9596ebb7	533	static void parallel_mm_writew (void *opaque,
c227f099	534	target_phys_addr_t addr, uint32_t value)
d60532ca TS	535	{
	536	ParallelState *s = opaque;
	537
8da3ff18	538	parallel_ioport_write_sw(s, addr >> s->it_shift, value & 0xFFFF);
d60532ca TS	539	}
d60532ca TS	540
c227f099	541	static uint32_t parallel_mm_readl (void *opaque, target_phys_addr_t addr)
d60532ca TS	542	{
	543	ParallelState *s = opaque;
	544
8da3ff18	545	return parallel_ioport_read_sw(s, addr >> s->it_shift);
d60532ca TS	546	}
d60532ca TS	547
9596ebb7	548	static void parallel_mm_writel (void *opaque,
c227f099	549	target_phys_addr_t addr, uint32_t value)
d60532ca TS	550	{
	551	ParallelState *s = opaque;
	552
8da3ff18	553	parallel_ioport_write_sw(s, addr >> s->it_shift, value);
d60532ca TS	554	}
d60532ca TS	555
d60efc6b	556	static CPUReadMemoryFunc * const parallel_mm_read_sw[] = {
d60532ca TS	557	&parallel_mm_readb,
	558	&parallel_mm_readw,
	559	&parallel_mm_readl,
	560	};
	561
d60efc6b	562	static CPUWriteMemoryFunc * const parallel_mm_write_sw[] = {
d60532ca TS	563	&parallel_mm_writeb,
	564	&parallel_mm_writew,
	565	&parallel_mm_writel,
	566	};
	567
	568	/* If fd is zero, it means that the parallel device uses the console */
c227f099	569	ParallelState parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq, CharDriverState chr)
d60532ca TS	570	{
	571	ParallelState *s;
	572	int io_sw;
	573
	574	s = qemu_mallocz(sizeof(ParallelState));
33093a0a AJ	575	s->irq = irq;
33093a0a AJ	576	s->chr = chr;
d60532ca	577	s->it_shift = it_shift;
a08d4367	578	qemu_register_reset(parallel_reset, s);
d60532ca	579
1eed09cb	580	io_sw = cpu_register_io_memory(parallel_mm_read_sw, parallel_mm_write_sw, s);
d60532ca TS	581	cpu_register_physical_memory(base, 8 << it_shift, io_sw);
	582	return s;
	583	}
021f0674 GH	584
	585	static ISADeviceInfo parallel_isa_info = {
	586	.qdev.name = "isa-parallel",
	587	.qdev.size = sizeof(ISAParallelState),
	588	.init = parallel_isa_initfn,
	589	.qdev.props = (Property[]) {
51954d56	590	DEFINE_PROP_UINT32("index", ISAParallelState, index, -1),
e8ee28fb	591	DEFINE_PROP_HEX32("iobase", ISAParallelState, iobase, -1),
021f0674 GH	592	DEFINE_PROP_UINT32("irq", ISAParallelState, isairq, 7),
	593	DEFINE_PROP_CHR("chardev", ISAParallelState, state.chr),
	594	DEFINE_PROP_END_OF_LIST(),
	595	},
	596	};
	597
	598	static void parallel_register_devices(void)
	599	{
	600	isa_qdev_register(&parallel_isa_info);
	601	}
	602
	603	device_init(parallel_register_devices)